<?php
/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2007 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * This is the integration file for PHP 5.
 *
 * It defines the FCKeditor class that can be used to create editor
 * instances in PHP pages on server side.
 */

class FCKeditor
{
    public $InstanceName ;
    public $BasePath ;
    public $Width ;
    public $Height ;
    public $ToolbarSet ;
    public $Value ;
    public $Config ;

    // PHP 5 Constructor (by Marcus Bointon <coolbru@users.sourceforge.net>)
    public function __construct( $instanceName )
    {
        $this->InstanceName    = $instanceName ;
        $this->BasePath        = 'public/scripts/fckeditor/' ;
        $this->Width        = '100%' ;
        $this->Height        = '600' ;
        $this->ToolbarSet    = 'Default' ;
        $this->Value        = '' ;

        $this->Config        = array() ;
    }

    public function Create()
    {
        echo $this->CreateHtml() ;
    }

    public function CreateHtml()
    {
        $HtmlValue = htmlspecialchars( $this->Value ) ;

        $Html = '<div>' ;

        if ($this->IsCompatible()) {
            if ( isset( $_GET['fcksource'] ) && $_GET['fcksource'] == "true" )
                $File = 'fckeditor.original.html' ;
            else
                $File = 'fckeditor.html' ;

            $Link = "{$this->BasePath}editor/{$File}?InstanceName={$this->InstanceName}" ;

            if ( $this->ToolbarSet != '' )
                $Link .= "&amp;Toolbar={$this->ToolbarSet}" ;

            // Render the linked hidden field.
            $Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}\" name=\"{$this->InstanceName}\" value=\"{$HtmlValue}\" style=\"display:none\" />" ;

            // Render the configurations hidden field.
            $Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}___Config\" value=\"" . $this->GetConfigFieldString() . "\" style=\"display:none\" />" ;

            // Render the editor IFRAME.
            $Html .= "<iframe id=\"{$this->InstanceName}___Frame\" src=\"{$Link}\" width=\"{$this->Width}\" height=\"{$this->Height}\" frameborder=\"0\" scrolling=\"no\"></iframe>" ;
        } else {
            if ( strpos( $this->Width, '%' ) === false )
                $WidthCSS = $this->Width . 'px' ;
            else
                $WidthCSS = $this->Width ;

            if ( strpos( $this->Height, '%' ) === false )
                $HeightCSS = $this->Height . 'px' ;
            else
                $HeightCSS = $this->Height ;

            $Html .= "<textarea name=\"{$this->InstanceName}\" rows=\"4\" cols=\"40\" style=\"width: {$WidthCSS}; height: {$HeightCSS}\">{$HtmlValue}</textarea>" ;
        }

        $Html .= '</div>' ;

        return $Html ;
    }

    public function IsCompatible()
    {
        global $HTTP_USER_AGENT ;

        if ( isset( $HTTP_USER_AGENT ) )
            $sAgent = $HTTP_USER_AGENT ;
        else
            $sAgent = $_SERVER['HTTP_USER_AGENT'] ;

        if ( strpos($sAgent, 'MSIE') !== false && strpos($sAgent, 'mac') === false && strpos($sAgent, 'Opera') === false ) {
            $iVersion = (float)substr($sAgent, strpos($sAgent, 'MSIE') + 5, 3) ;
            return ($iVersion >= 5.5) ;
        } else if ( strpos($sAgent, 'Gecko/') !== false ) {
            $iVersion = (int)substr($sAgent, strpos($sAgent, 'Gecko/') + 6, 8) ;
            return ($iVersion >= 20030210) ;
        } else
            return false ;
    }

    public function GetConfigFieldString()
    {
        $sParams = '' ;
        $bFirst = true ;

        foreach ($this->Config as $sKey => $sValue) {
            if ( $bFirst == false )
                $sParams .= '&amp;' ;
            else
                $bFirst = false ;

            if ( $sValue === true )
                $sParams .= $this->EncodeConfig( $sKey ) . '=true' ;
            else if ( $sValue === false )
                $sParams .= $this->EncodeConfig( $sKey ) . '=false' ;
            else
                $sParams .= $this->EncodeConfig( $sKey ) . '=' . $this->EncodeConfig( $sValue ) ;
        }

        return $sParams ;
    }

    public function EncodeConfig( $valueToEncode )
    {
        $chars = array(
            '&' => '%26',
            '=' => '%3D',
            '"' => '%22' ) ;

        return strtr( $valueToEncode,  $chars ) ;
    }
}